Floor covering and the like



Feb.'28u, 1933. D. L ,.Rwm AL..

nook `ummm; Ann Tas uns Filed oci. s, 192s Patented Feb. 28,1933.`

UNITED STATES,

Davis miniem* mw'xmor HIGH noLBonN, Lennon, im inclinar maar :"rxrrmaor PATENT Orf-Flc a) GOLDERS GREEN, LONDON,E NGLAND A' n i s110013.` c ovEmNe AND .THE i LIKE I l A o l v Application med October 6, 1928,. Serial-No. 310,757, and in Great Britain October 18, 1987.

This invention relates to floor coverings y and the like of flexible or semi-flexible character. Y

There are, among others, two types of floor those which comprise a `foundation of textile material, such as hesiti provide an improved flooring of a. flexible or sian, coated with a composition consisting essentially of cork and pol merized or oxidation products of linseed oil, that is to say the material known as linoleum, the coating of the composition in question being of appreciable thickness. The other class consists of felt im regnated with bituminousl material the sur ace of which is decorated by the application thereto of a relatively thin layer of what may be described as paint.

Floorings having a backing of textiley material such as hessian are sub]ect to injury 1f laid upon moist surfaces as the moisture rots .g l

ly 1n the fo owing manner the textile material and appears to promote undesirable changes in the surfacing composition.

Floorings whether of canvas or Vbituminized felt surfaced merely with paint are subject to rapid deterioration owingto the destruction ofthe surface decoration by attrition.

It has been roposed to manufacture floor coverings by t e application to bituminized felt of a relatively thick layer of compositions ofthe character used in the production of linoleum and difiiculty has been experienced vin securing a satisfactory bondbetween the bituminized felt foundation orf backing and the coating composition and also in the application of the latter to the felt foundation.

The objectof the present. invention is to semi-flexible character having a wearing sur face constituted by a linoleum composition and a backing or foundation of bituminized felt.

According to the present invention the bituminized felt is coated with an aqueous A emulsion of a water insoluble resin such as rosin prior to applying the coating of linoleitating the adhesionbetween the latter yand the bituminized felt.

While the composition may contain a proi portion .of filling or other solid `material it would appear preferable that it should be free thereof or contain only a relatively small amount of such material.

When pitch or bituminous -material is included in the, composition it may be employed ina proportion equal to the proportion of rosin therein. v

Thus, for instance, the composition ma comprise 68 parts by weight of steal-.in pitc havin a fusing point of to 70 F., 61 parts y weight of rosin, 2 arts by weight of borax, v13 arts by weig t of casein, 13 parts by weig t of ammonia of 26 Baume and a, proportion of water suiicient to yield a composition ofthe desired consistency.

This com osition isproduced convenientvpitch and rosin is run slowly at a temperature of 190 to 210 F. into a dispersion of casein formed by mixing casein with about 4 to 5 times its weight of water,r allowing it to soak for a suitable period and then add- .ing borax in solution gradually with agitation. The mixture produced by bringing together pitch and rosin and the casein dispersion formed as above described is allowed to cool when it will become more viscous and maybe thinned by the additionofa further quantity of water. The ammonia is then added gradually and, after the addition of the ammonia, water is added.

In producing oorin in accordance with the invention the lino eum composition is irst rolled out into sheet form and a single sheet of the composition is then applied to the face of a sheet of bituminized felt which has been treated with the rosin emulsionand allowed to dry.

The composite sheet thus formed is then passed between heated rollers.

If the productionof an inlaid effect is desiredvthemsheet of linoleum composition l will be first divided up into pieces of suitable form and size and a number of such pieces will be laid up in the treated surface of a sheet of bituminized felt and the whole then passed between heated rollers in the manner above indicated. l i. Y

which kil- Inthe Vaccompanying drawing lustrates diagrammatically and in section a sheet of flooring material in accordance with the invention', I is the sheet of bituminized felt, 2 is the layer of adhesive andV 3 the sheet of linoleum composition.

Having now described our`invention', what we claim as new and desire to secure by Letters Patent is 1: A floor covering comprising a bituminized `fibrous backing, a linoleum composi-i tion surface, and an intermediate v adhesive binder formed of an aqueous alkaline caseinate emulsion containing a water insoluble resinous substance and a bituminous substance.

2. A floor covering com' rising a bituminized felt backing' a lino eum composition surface, and an intermediate adhesive binder formed of an aqueous alkaline caseinate emulsion containing rosin and pitch.

3. A floor covering comprising a bituminized felt backing, a linoleum surface, and an intermediate adhesive binder formed of an aqueous alkaline caseinate emulsion containing rosin and stearin pitch.

In testimony' whereof we have signed our names to this specification.

Y' DAVIS LAMBERT IRWIN.

ROBERT ERNEST TIPPINS.- 

